Finding the Fourth Proportional to 142,536.27, 196,704.14 and 78,879.99
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Solution
The fourth proportional to 142,536.27, 196,704.14 and 78,879.99 is: 108,856.65
Step by Step Solution
- Step 1: Write the proportion equation
142,536.27 : 196,704.14 = 78,879.99 : x - Step 2: Convert to fraction form
142,536.27/196,704.14 = 78,879.99/x - Step 3: Cross multiply
142,536.27x = 196,704.14 × 78,879.99 - Step 4: Simplify right side
142,536.27x = 15,516,020,596.16 - Step 5: Solve for x
x = 15,516,020,596.16/142,536.27 - Step 6: Final answer
x = 108,856.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.